Bidirectional communication system having symmetrical...

H - Electricity – 04 – L

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H04L 5/02 (2006.01) H04B 3/21 (2006.01) H04L 5/14 (2006.01) H04M 11/06 (2006.01)

Patent

CA 2278930

The present invention is a communication system for communicating information over greater distances than otherwise possible on bidirectional media subject to interference, by reducing the interference while assuring spectral compatibility with other communication services. The system of the present invention provides symmetric data service to end users by using asymmetric signaling. In one embodiment, the present invention utilizes partially overlapped, non-symmetric baud rates and spectrally shaped transceiver filters to achieve both spectral compatibility and extended range.

Cette invention se rapporte à un système de communication qui réalise la communication d'informations sur des distances plus grandes que ce qui est autrement possible avec des supports bi-directionnels sujets aux interférences, en réduisant ces interférences tout en assurant la compatibilité spectrale avec d'autres servicesde communication. Ce système fournit un service de données symétrique aux utilisateurs finals, en utilisant la signalisation asymétrique. Dans un mode de réalisation, cette invention utilise des débits en baud non symétriques se chevauchant partiellement et des filtres d'émetteurs/récepteurs avec mise en forme spectrale, pour obtenir à la fois la compatibilité spectrale et une extension de la portée.

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